/**
* Parse and generate expression from the the given odata expression.
*
*
* @param string $text The text expression to parse
* @param ResourceType $resourceType The resource type in which
* @param IExpressionProvider $expressionProvider Implementation of IExpressionProvider
*
* @return FilterInfo
*
* @throws ODataException If any error occurs while parsing the odata expression or building the php/custom expression.
*
*/
public static function parseExpression2($text, ResourceType $resourceType, \POData\Providers\Expression\IExpressionProvider $expressionProvider)
{
$expressionParser2 = new ExpressionParser2($text, $resourceType, $expressionProvider instanceof PHPExpressionProvider);
$expressionTree = $expressionParser2->parseFilter();
$expressionAsString = null;
$expressionProvider->setResourceType($resourceType);
$expressionProcessor = new ExpressionProcessor($expressionProvider);
try {
$expressionAsString = $expressionProcessor->processExpression($expressionTree);
} catch (\InvalidArgumentException $invalidArgumentException) {
throw ODataException::createInternalServerError($invalidArgumentException->getMessage());
}
return new FilterInfo($expressionParser2->_navigationPropertiesUsedInTheExpression, $expressionAsString);
}
/**
* Parse the astoria filter expression, generate the same expression as PHP expression,
* retrieve only the entries which satisfies this expression.
*
* @param string $astoriaFilter
* @param ResourceType $resourceType
* @param array<objects> $entries
*
* @return array<objects>
*/
private function executeExpression($astoriaFilter, $resourceType, $entries)
{
//Parse the Astoria filter query option to expression tree
$parser = new ExpressionParser2($astoriaFilter, $resourceType, true);
$expressionTree = $parser->parseFilter();
//emit the PHP expression corresponds to Astoria filter query
$expressionProcessor = new ExpressionProcessor(new \POData\Providers\Expression\PHPExpressionProvider('$lt'));
$phpExpression = $expressionProcessor->processExpression($expressionTree);
//create an anonymous function with the generated PHP expression in if condition
$fun = create_function('$lt', 'if(' . $phpExpression . ') { return true; } else { return false;}');
$result = array();
foreach ($entries as $lt) {
//Filter out only the entries which satisfies the condition
if ($fun($lt)) {
$result[] = $lt;
}
}
return $result;
}
